package com.atguigu.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.atguigu.constant.MessageConstant;
import com.atguigu.entity.Result;
import com.atguigu.service.MemberService;
import com.atguigu.service.ReportService;
import com.atguigu.service.SetmealService;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;


@RestController
@RequestMapping("/report")
public class ReportController {

    @Reference
    MemberService memberService;
    @Reference
    SetmealService setmealService;

    @Reference
    ReportService reportService;
    /* 数据返回的结构Map map = new HashMap<>();
         map.put("months", months);
         map.put("memberCount", memberCount);*/
    @RequestMapping("/getMemberReport")
    public Result getMemberReport(){
        try {
            //// 获取日历对象
            Calendar calendar = Calendar.getInstance();
            //根据当前时间，获取前12个月的日历(当前日历2020-02，12个月前，日历时间2019-03)
            //第一个参数，日历字段
            //第二个参数，要添加到字段中的日期或时间
            calendar.add(Calendar.MONTH,-12);//按照日历向前偏离12个月，2020.4

            List<String> paramList = new ArrayList<String>();//存放最近12个月的字符串
            for(int i = 0;i < 12;i++){
                calendar.add(Calendar.MONTH,1);//向后偏离，2020
                paramList.add(new SimpleDateFormat("yyyy-MM").format(calendar.getTime()));
            }

            Map<String,Object> map = memberService.getMemberReport(paramList);

            return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL);
        }
    }


/*
* Map map =new HashMap();
* map.put("setmealNames",setmealNames); //List<string>  套餐名称
* map.put("setmealCount",setmealCount);//List<Map<string,Integer>>  key:name 套餐名称，value：value 套餐预约数量
* */
    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport(){
        try {
           List<Map<String,Object>>setmealCount=setmealService.getSetmealReport();
           List<String>setmealNames=new ArrayList<>();
            for (Map<String, Object> stringIntegerMap : setmealCount) {
                String name=(String)stringIntegerMap.get("name");
                Long value=(Long)stringIntegerMap.get("value");
                setmealNames.add(name);
            }
            Map data=new HashMap();
            data.put("setmealNames",setmealNames);
            data.put("setmealCount",setmealCount);
            return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, data);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL);
        }
    }

    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData(){
        try {
            Map<String,Object> map = reportService.getBusinessReportData();
            return new Result(true, MessageConstant.GET_BUSINESS_REPORT_SUCCESS,map);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }

    }

    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response){
    try{

        //1.远程调用报表服务获取报表数据
        Map<String, Object> result = reportService.getBusinessReportData();

        //取出返回结果数据，准备将报表数据写入到Excel文件中
        String reportDate = (String) result.get("reportDate");
        Integer todayNewMember = (Integer) result.get("todayNewMember");
        Integer totalMember = (Integer) result.get("totalMember");
        Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
        Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
        Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
        Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
        Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
        Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
        Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
        Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
        List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

        //2.将数据写入到模板文件中
        //获得Excel模板文件绝对路径   file.separator这个代表系统目录中的间隔符，说白了就是斜线。
        String filename=request.getSession().getServletContext().getRealPath("template")+File.separator+"report_template.xlsx";
        FileInputStream fis =new FileInputStream(new File(filename));
        //读取模板文件创建Excel表格对象
        Workbook workbook = new XSSFWorkbook(fis);
        Sheet sheet = workbook.getSheetAt(0);

        //日期
        Row row = sheet.getRow(2);
        Cell cell = row.getCell(5);
        cell.setCellValue(reportDate);

        row = sheet.getRow(4);
        row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
        row.getCell(7).setCellValue(totalMember);//总会员数

        row = sheet.getRow(5);
        row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
        row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

        row = sheet.getRow(7);
        row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
        row.getCell(7).setCellValue(todayVisitsNumber);//今日出游数

        row = sheet.getRow(8);
        row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
        row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周出游数

        row = sheet.getRow(9);
        row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
        row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月出游数

        int rowNum = 12;
        for(Map map : hotSetmeal){//热门套餐
            String name = (String) map.get("name");
            Long setmeal_count = (Long) map.get("setmeal_count");
            BigDecimal proportion = (BigDecimal) map.get("proportion");
            row = sheet.getRow(rowNum ++);
            row.getCell(4).setCellValue(name);//套餐名称
            row.getCell(5).setCellValue(setmeal_count);//预约数量
            row.getCell(6).setCellValue(proportion.doubleValue());//占比
        }

        //3.将Excel文件输出给浏览器，其实就是文件下载
        OutputStream out = response.getOutputStream();//二进制流
        // 下载的数据类型（excel类型）
        response.setContentType("application/vnd.ms-excel");//响应头信息，服务器告诉浏览器返回的数据内容类型
        // 设置下载形式(通过附件的形式下载)
        response.setHeader("content-Disposition", "attachment;filename=report.xlsx");
        workbook.write(out);
        out.flush();
        out.close();
        workbook.close();
        return null;
    }catch (Exception e){
        e.printStackTrace();
        return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL,null);
    }
    }
}